Looms



'2 Sheets-Sheet l,

No Model.)y

A T. A. BRADY. I TAKE-UP AND DROP BOX GOVERNING MBGHANI-SM POR LOOMS.No. 559,768.

Patented May 5, 1896.

ANDREW BLMHAM.WWTGLUMQWASUNGWNJL (No Model.) 2 Sheets-Sheet 2.

T. A. BRADY. TAKE-UP AND DROP BOX GOVERNING MEGHANISM POR LOOMS.

Patented May 5, 1896.

UNITED STATES PATENT Ormes.

THOMAS A. BRADY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNEASSIGNMENTS, TO IIIMSELF AND VILIJIAM BRADY, OF SAME PLA CE.

TAKE-UP AND DROP-BOX GOVERNING MECHANISM FOR LOOMS.

SPECIFICATION formingpart of Letters PatentNo. 559,768, dated May 5,1896.

Application filed November 28, 1892. Serial No. 452,927. (No model.) i

To all whom t may concern.-

Be it known that I, 'THOMAS A. BRADY, a citizen of the United States,and a resident of Philadelphia, Pennsylvania, have invented certainImprovements in Take-Up and Drop- Bor;l Governing Mechanism for Looms,of which the following is a specification.

The object of my invention is to provide a loom with mechanism wherebythe movement of the take-up and of the drop-box chain will be arrestedon the stoppage of the loom caused by the action of the weft-fork, saidparts remaining out of action during the time that the loom is beingoperated by hand, so that when the loom is again thrown into action saidtakeup and drop-box mechanism will be in precisely the same position aswhen the loom was knocked off. This object I attain in the mannerhereinafter set forth, reference being had to the accompanying;drawings, in which- Figure 1 is a perspective view showing sufficient ofa loom to illustrate the application of my invention thereto, the partsto which the invention particularly relates being shown in full linesand the remaining parts in dotted lines. Figs. 2 and 3 are perspectiveviews, on a larger scale, illustrating' parts of the loom to which theinvention relates; and Fig. 4 is a view illustrating a modification ofone of the details of the invention.

In Fig. l, A represents the usual weft-fork connected to a rock-shafta., which has an arm a', connected by a cord o2 to a pivoted linger l1,carried by a bell-crank lever o', the latter being hung to the sideframe of the loom and acted upon by a cam on the main shaft, as usual,so as to impart a reciprocating Inovement to the finger l). 1When theweft-thread is properly shot into the open shed of warpthreads, saidweft-thread will on the forward beat of the lathe strike the weft-forkand push the same forward, so as to swing the rock-shaft o, and lift thefinger b to a point above a lug d on a slide d', which I call theweft-fork tripper-slide i and which is guided on the frame of the loom.Hence the 'forward motion of the finger has no effect upon said weftforktripper-slide; but in the absence of a weft-thread in position to strikethe weftfork A the latter is not moved forward and the finger b ispermitted to hang down, so as to strike the lug d and move the slide dforward, a depending linger cl2 at the outer end of the slide in suchcase acting upon one arm of a trip-lever f, the other arm of which actsupon the shuttle stop-lever g, hung to the under side of thebreast-beam, the outer end of said leverthereupon pressing upon thespring shifter-lever g and releasing the same from the notch in theretainer-plate g3, so as to permit it to swing outward and shift theclutch on the main shaft, so as to throw the loom out of gear.

The swinging lathe has a projecting stud fi, which enters a slot in alever i", hung to the frame of the loom and carrying a pawl 712, whichacts upon a ratchet-wheel m, constituting the primary wheel of thetake-up train, the Shaft of said wheel having a spur-pinion m', meshingwith a spur-wheel m2 on the shaft of the take-np roll, any backwardmovement of the ratchet-Wheel m being prevented by means of aretaining-pawl i3, hung to the pivot-stud of the lever i'.

The drop-box chain 'n is actuated by a reciprocating bar n', whichreceives mmrement from a cam n2 on the main shaft, said cam acting upona pivoted toe or iinger n3, hung to the bar n. All of these parts arecommon to looms as now constructed and form no part of my invention,except as they may be combined with the novel devices which I employ andwhich I will now proceed to describe.

On the inner side of the weft-fork tripperslide d is a lug or projectionl, and with this lug is adapted to engage a spring catch or retainer 2,hung to the side of the loom, so that when the slide d' has been pushedforward by the finger b the retainer will engage with said lug l, asshown in Fig. 3, and will hold the slide so far as regards anyaccidental backward movement of the saine, but will permit it to bemoved back when sufficient force is applied to it.

Upon the roclnshaft 3, which carries the trip-leverf, I mount an arm 4:,connected by a suitable link 5 to an arm G on a lever 7, suitably hungat some fixed point and adapted to act upon the retaining-pawl of theratchet- IOO wheel m., so that when the slide fl' is pushed forward saidretaining-pawl will be lifted from engagement with the teeth of theratchetwheel and there will be no forward movement of said wheel or ofthe take-up roll until the pawl has been again permitted to drop intoengagement with the teeth of the wheel, an operation which is noteffected until the clutch-operating lever g has been pulled into thenotch of the retainer-plate g2 in order to again start the loom, thisoperation having the effect of pushing back the slide CZ under theaction of the lever j'.

The rock-shaft 3 has at the other side of the loom an arm 8, connectedby a cord 9 to the pivoted toe n3 on the reciprocating bar n', whichIoperates the pattern-chain, and the same movement of the rock-shaft 8which actuates the lever 7 and lifts the pawl i3 causes such movement ofthe arm 8 as to lift the toe 'n3 out of the path of the cam n2. Hence assoon as the loom is knocked oft there will be no operation either of thetake-up mechanism or of the drop-box pattern-chain, the throwing of theloom again into gear, however, restoring both take-up and drop-box chainto operative position, the loom thus starting again with the take-up anddrop-boxes pirecisely at the points which they occupied when the loomwas stopped.

Although in carrying out my invention I prefer to adopt theconstruction. which I have shown and described, various modifications ofthe mechanism within the scope of my invention will readily suggestthemselves to those skilled in the art. Forinstance, instead `of using aspring catch or retainer for holdingthe weft-fork tripper-slide in itsposition of advancement a frictional retainer might be used for thepurpose-such, for instance, as an elastic or semielastic washer w,interposed between the top of the slide and the nut which confines thesame to the frame of -fthe loom, as shown in Fig. eis-and the lever 7might be so located as to lift the operatingpawl 1? out of actioninstead of the retainingpawl i3, and other minor details may be modifiedin various Ways.

Having thus described my invention, l claim and desire to secure byLetters Patent- The combination of the weft-fork tripperslide of theloom, the drop-box pattern-chain,

the bar for operating the same, a pivoted toe or finger on said bar, acam acting on said toe or finger to reciprocate the bar, take-upvmechanism having as elements a ratchetvname to this speciiication inthe presence of two subscribing witnesses.

THOMAS A. BRADY. lVitnesses:

JOHN McOLosKnv, JOHN G. DIEZ, Jr.

